Plant Density and Time of White Lupine (Lupinus Albus L.) Relay Cropping with Tef (Eragrostis tef (Zucc.) Trotter) in Additive Design in the Highlands of Northwest Ethiopia

Table 2

Effect of plant density and time of lupine relay cropping in tef (Eragrostis tef) on vegetative growth, yield, and yield components of tef in 2016 and 2017 main cropping seasons in northwest Ethiopian highlands.

Plant height of tef (cm)

No. of effective tillers of tef

Grain yield of tef (t/ha)

Straw yield of tef (t/ha)

T

IR (cm)

TI (weeks)

2016

2017

COY

2016

2017

COY

2016

2017

COY

2016

2017

COY

T1

20

1

128.5^a

130.0^a

129.3^a

1.8^d

2.1^d

2.0^e

0.76^e

0.84^d

0.80^e

3.38^c

3.37^c

3.37^c

T2

2

122.3^ab

112.3^bc

117.3^b

2.3^cd

2.4^cd

2.5^d

1.13^d

1.36^c

1.25^d

4.33^b

4.42^b

4.38^b

T3

3

109.9^c

104.0^dc

107.1^c

2.6^c

2.6^c

2.6^d

1.47^c

1.44^bc

1.45^c

4.79^ab

4.97^ab

4.88^ab

T4

40

1

111.0^bc

116.0^b

113.0^bc

4.7^b

4.4^b

4.6^c

1.57^bc

1.61^ab

1.60^bc

5.11^a

5.19^a

5.15^a

T5

2

106.1^c

112.8^bc

109.5^bc

5.2^b

5.7^a

5.4^b

1.74^ab

1.77^a

1.76^a

5.51^a

5.22^a

5.37^a

T6

3

105.1^c

100.1^d

103.1^c

6.5^a

6.1^a

6.3^a

1.85^a

1.74^a

1.80^a

5.48^a

5.51^a

5.50^a

Sole

1.80

1.74^a

1.77^a

5.4^a

4.83^a

4.80^a

P value

ns

SE±

5.3

4.6

4.0

0.34

0.23

0.24

0.11

0.08

0.07

0.33

0.35

0.23

CV%

6.6

5.8

4.2

10.6

12.1

8.8

8.7

7.1

6.7

12

8.9

7.2

Means within a column followed by the same letter(s) are not significantly different:  = highly significant at P < 0.01;  = significant at P < 0.05; ns = nonsignificant at P ≥ 0.05; T = treatment; IR = inter-row spacing of lupine; TI = time of lupine intercropping in weeks; COY = combined over years; SE± = standard error; CV = coefficient of variation.